- David Hayman
- General Rhinus
- Ronan Vibert
- Caesar
- Philippe De Grossouvre
- Jean Marcosivellauniviromandiboule / Young Gaul
- Doon Mackichan
- Dwyfuc
- Fiona Allen
- Smirgut the Fierce
- Sally Phillips
- Worthaboutapig
- Rory MacGregor
- Male Dubonni Warrior
- Pam Ferris
- Mrs. Goatsplitter
- Brendan O'Hea
- Welsh Suitor
- William Chubb
- Chamberlain
- Dorian MacDonald
- Geordie Suitor
- Nicola Stephenson
- Elderly Dubonni Woman
- Marcia Warren
- Queen Tuathfhlaifthfth
- Dermot Keaney
- French Speaker
- Bruno Lastra
- Messenger
- Sandra Reinton
- Andrasta
- Kee Ramsorrun
- Charging Northerner
- Adam Fogerty
- Wolfsclaw
- Joe Fraser
- Moneychanger
- Frederick Allouard-Rubin
- First Boy
- Lenny Peters
- Second Boy
- Anna Wilson-Jones
- Lofacta
- Julian Rivett
- Cockney Lookout
- Cliff Parisi
- Cockney Smuggler
- Nicholas Le Prevost
- Crassus
- George Antoni
- Barman
- Lloyd Hutchinson
- Pictish Man
- Pauline Lockhart
- Pictish Woman
- Mark Benton
- Stage Manager / Hermes
- Tristan Gemmill
- Firmus
- Nick Cavaliere
- Roman Officer
- Hugh Sachs
- Lawyer
- Joe Montana
- Schlaffwaffe
- Steve Benham
- Roman Builder
- Greg Bennett
- Caesar's Praetorian Guard
- Josh Connor
- Fighting Gladiator
- Oliver Ford Davies
- (uncredited)
- James Paul HattSmith
- Various
- Nic Main
- Roman general / Gladiatior Fighting (uncredited)
- Steve Saunders
- Peasant / Builder / Tribal / Standard Bearer (uncredited)
